Because ventilation requirements vary from state to state and even from city to city it s important to check with local.
Kitchen hood vent requirements. Kitchen ventilation typically is provided by a vent hood also called a range hood or by an above the counter microwave with an integrated vent fan. Some state building codes do require mechanical ventilation such as an exhaust fan in the kitchen. Local exhaust ventilation fans have a wide range of controls that will meet ashrae standard 62 2. Kitchen dining facility has more than 5 000 cfm of exhaust hoods the requirements for the larger system apply individual exhaust hood airflows must be checked against the maximum airflow table and one of the three energy saving methods must be met.
You should also take into account the size of your kitchen in cubic feet when calculating the size range hood fan needed since a larger kitchen needs more venting to clear the air than a smaller room. No one wants to work in a smoky hot greasy kitchen. Vents should be made of metal or aluminum only with a rigid metal vent recommended. Control strategies for local exhaust ventilation fans.
Cooking surfaces cooktop or range top must be ventilated by a hooded fan rated for at least 100 cubic feet per minute cfm. Air requirements for the operation of exhaust fans kitchen ventilation systems clothes dryers and fireplaces shall be considered in determining the adequacy of a space to provide combustion air requirements. Commercial kitchen hood code requirements ensure that the kitchen maintains its air quality and temperature and that flammable grease is removed from the environment. Kitchen hood venting requirements.
Moreover code watcher advises that since 2009 the international residential code irc includes a section on air replacement for houses with active kitchen ventilation. Bath fans have more control options. Outdoor kitchen ventilation safety if you are building your outdoor kitchen under a roof vent hoods are a must have so you and your guests aren t standing in a cloud of smoke. And no one wants to dine at a restaurant where those smoky and greasy odors overpower the smell of the food.
All kitchen range hood vents should terminate outside through the roof or a side wall not into an attic or other enclosed area. The exhaust fan is typically mounted in a range hood or cabinet or on the wall over the kitchen stove. Vents should never be terminated into spaces within walls ceilings crawl spaces or garages. Regardless of what kind of ventilation system is installed for the rest of the house an exhaust fan should be installed in the kitchen to exhaust moisture and odors associated with cooking.